The aspects of things that are most important for us are hidden because of their simplicity and familiarity.
Wittgenstein
Look for knowledge not in books but in things themselves.
William Gilbert
Our deeds determine us, as much as we determine our deeds.
George Eliot
If the building of a bridge does not enrich the awareness of those who work on it, then that bridge ought not to be built.
Frantz Fanon
Do every act of your life as if it were your last.
Marcus Aurelius