16 related Principles
Leadership & Management
Leadership through trust, accountability, humility, coaching, delegation, psychological safety, long-term thinking, and enabling other people to succeed.
Explore Leadership →The 42 Principles
Explore by topic.
The Principles cross engineering, leadership, family, relationships, character, learning, stress, decision making and the broader human experience. Start with the question you are trying to understand rather than the number of the Principle that contains it.
Topic guides
Start with what you are trying to understand.
Each guide brings together related ideas from across the complete book and connects them to the original Principles.
12 related Principles
Problem Solving & Troubleshooting
A disciplined approach to troubleshooting, root-cause analysis, evidence, measurement, assumptions, constraints, complexity, failure, and solving the real problem.
Explore Problem Solving →16 related Principles
Trust, Integrity & Character
Trust built through truth, humility, reliability, consistency, accountability, keeping commitments, admitting uncertainty, and choosing character when comfort is easier.
Explore Trust & Integrity →5 related Principles
Learning & Curiosity
Curiosity, lifelong learning, intellectual flexibility, better questions, humility, reflection, and remaining teachable throughout a career and a life.
Explore Learning →5 related Principles
Critical Thinking & Evidence
Evidence, assumptions, uncertainty, bias, inference, groupthink, competing explanations, and the discipline of changing conclusions when reality changes.
Explore Critical Thinking →13 related Principles
Mentoring, Teaching & Coaching
Teaching independence, coaching, knowledge sharing, feedback, mentorship, documentation, and helping people become more capable without making them dependent.
Explore Mentoring →13 related Principles
Communication & Relationships
Listening, clarity, disagreement, empathy, promises, difficult conversations, trust, and communication that strengthens professional and personal relationships.
Explore Relationships →14 related Principles
Personal Growth & Self-Awareness
Humility, reflection, identity, responsibility, emotional maturity, learning from experience, and becoming more capable without becoming more certain of yourself.
Explore Personal Growth →18 related Principles
Career Development & Professional Reputation
Professional growth, usefulness, reputation, quiet competence, knowledge sharing, consistency, mentorship, and becoming someone other people can depend on.
Explore Career Growth →4 related Principles
Resilience, Failure & Recovery
Failure preparation, recovery, reliability, graceful degradation, learning from adversity, reducing panic, and designing systems and people to recover when things go wrong.
Explore Resilience →18 related Principles
Systems Thinking & Complexity
Dependencies, second-order effects, complexity, bottlenecks, unintended consequences, feedback, tradeoffs, and understanding how parts interact as a whole.
Explore Systems Thinking →4 related Principles
Security, Privacy & Risk
Security by design, privacy, identity, least privilege, layered defense, dependencies, resilience, conscious risk acceptance, and protecting people rather than merely passing controls.
Explore Security & Risk →14 related Principles
Judgment, Priorities & Decision Making
Tradeoffs, priorities, reversibility, scope, opportunity cost, evidence, uncertainty, measurement, and making responsible decisions without waiting for perfect knowledge.
Explore Decision Making →19 related Principles
Stewardship, Purpose & Legacy
Contribution, purpose, succession, service, institutional memory, gratitude, responsibility for what we inherit, and leaving people and systems better than we found them.
Explore Purpose & Legacy →7 related Principles
Parenting, Family & Helping Others Grow
Parenting, family relationships, trust, boundaries, consistency, difficult conversations, teaching independence, and helping people grow without controlling them.
Explore Parenting & Family →8 related Principles
Stress, Pressure & Sustainable Responsibility
Stress management through preparation, clarity, boundaries, reduced complexity, recovery, realistic responsibility, and designing work so that emergencies do not consume the rest of life.
Explore Stress & Pressure →