It's always too early to quit.
The wise does at once what the fool does at last.
What you do today can improve all your tomorrows.
Things do not happen. Things are made to happen.
The most effective way to do it, is to do it.
Wherever you are - be all there.
Expect problems and eat them for breakfast.
Know or listen to those who know.
Begin to be now what you will be hereafter.
Do not weep do not wax indignant. Understand.
The best museums and museum exhibits about science or technology give you the feeling that, hey, this is interesting, but maybe I could do something here, too.