Learning is the product of the activity of learners.

Well, I must endure the presence of a few caterpillars if I wish to become acquainted with the butterflies.

Man discovers himself when he measures himself against the obstacle.

It is only with the heart that one can see rightly; what is essential is invisible to the eye.

No one saves us but ourselves. No one can and no one may. We ourselves must walk the path.

The aim of education is growth: the aim of growth is more growth.

Every great advance in science has issued from a new audacity of imagination.

Art is the most effective mode of communications that exists.

Without some goals and some efforts to reach it, no man can live.

Always make the other person feel important.