The gem cannot be polished without friction nor man without trials.
If you think in terms of a year, plant a seed; if in terms of ten years, plant trees; if in terms of 100 years, teach the people.
Every journey starts with a single step.
With coarse rice to eat, with water to drink, and my bent arm for a pillow - I have still joy in the midst of all these things.
Study without reflection is a waste of time; reflection without study is dangerous.
He who learns but does not think, is lost! He who thinks but does not learn is in great danger... Men of superior mind busy themselves first getting at the root of things; when they succeed, the right course is open to them.