Science is simply common sense at its best—that is, rigidly accurate in observation, and merciless to fallacy in logic.  

When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.

Your mindset determines your success more than your skills ever will.

唯一真正重要的是你在世界上产生的影响。