From principles is derived probability but truth or certainty is obtained only from facts.

Adversity is a great teacher but this teacher makes us pay dearly for its instruction and often the profit we derive is not worth the price we paid.

The teacher must derive not only the capacity but the desire to observe natural phenomena. The teacher must understand and feel her position of observer: the activity must lie in the phenomenon.

But the general welfare must restrict and regulate the exertions of the individuals as the individuals must derive a supply of their strength from social power.

The mark of a truly civilized man is confidence in the strength and security derived from the inquiring mind.

Internationalism on the other hand admits that spiritual achievements have their roots deep in national life from this national consciousness art and literature derive their character and strength and on it even many of the humanistic sciences are firmly based.

Jesus wept Voltaire smiled. From that divine tear and from that human smile is derived the grace of present civilization.

Religion is an illusion and it derives its strength from the fact that it falls in with our instinctual desires.

We need to understand that we are not each others' enemies in this country. And it is only the political class that derives its power by creating friction. It is only the media that derives its importance by creating friction... that uses every little thing to create this chasm between people. This is not who we are.

I am sure that no man can derive more pleasure from money or power than I do from seeing a pair of basketball goals in some out of the way place.