The 'stream' we call science always flows forward; sometimes reactionary beavers block its flow, but the stream is never defeated by this; it accumulates, gathers strength; its waters get over the barrage and continue on their course. The advancement of science is the advancement of God, for science is nothing but human intelligence, and human intelligence is the most valuable treasure God has bequeathed us.

We need more windows for the houses. And for men, more reason!

If you despise the mountains you have climbed, you are not welcomed by the mountains you have not yet climbed!

You want to do something good for the flowers? Then, keep the flowers in the soil, in nowhere else!

Before you enter the forest, you must leave your mind outside, because in the land of fairy tales there is no need for it!

We determine our own price; it is always good to set our price to infinity so that no one can buy us!

Life is meaningless; man's biggest challenge is to make it meaningful!