Great lines:

Thinking is great, but without movement, it is an absolute and utter waste of your time.

We have seen the materialization of too much thinking and little action. Internationally, we see it everyday. People are dying and the UN and OEA debate meeting after meetings, most of them months apart, whether a measure should be taken and which one. No tragedy is enough to teach that actions sometimes are better than words and prompt actions must follow a thought out solution to a problem.

Russell's words are lapidary

The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.

Worse yet, even if fools and evil people are not certain about what they are doing, they are quick to act upon their ideas. How many good actions have not been carried out because someone alerted about a possible downside, a collateral damage, an infringement to some law?

At the individual level, obviously, the contradictions may abound, because unless someone else points it out to us, it may be very easy not to notice that we are not following the advice we are giving others.
"En casa de herrero, cuchillo de palo", goes the spanish saying (wooden knives at the blacksmith's house)