I refuse to engage in an intellectual battle with an unarmed man.

People like you and I, though mortal of course like everyone else, do not grow old no matter how long we live.

Man's will, sustained by an indominable conviction, is much more powerful than material forces that seem insurmountable.

When the number of factors coming into play in a phenomenological complex is too large scientific method in most cases fails. One need only think of the weather, in which case the prediction even for a few days ahead is impossible.

Human knowledge and skills alone cannot lead humanity to a happy and dignified life. Humanity has every reason to place the proclaimers of high moral standards and values above the discoverers of objective truth.

Politics is far more complicated than physics.

Joy and amazement of the beauty and grandeur of this world of which man can just form a faint notion.