Human being is a plant that makes thoughts blossom and bear fruit, just like roses blooming on a rose tree and apples on an apple tree. ——Antoine Fabre Dorivi
Life is extended in development, because thought is the measure of life. ——Leland
The entire history of mankind has warned wise people not to believe in fortune but in ideas. ——Ai Xiansheng
Without freedom of thought, there is no science and no truth. ——Renan
After many ideas are transferred into the minds of others, they will grow stronger than where they originally grew. ——Oliver Wendell Holmes, Jr.
He who kills his thoughts is the greatest murderer. ——Romain Rolland
Thought is the slave of life, and life is the trick of time. ——Shakespeare
The human mind is like a clock, it is easy to stop and needs to be wound up frequently. ——V. Herzlit
The dirt on the mind cannot be erased by the passing of time, nor can it be washed away with water. ——Cicero
It takes extraordinary thought to analyze the obvious. ——Whitehead
Only noble thoughts, but no noble blood. ——Germany
Ideological efforts, like the seeds that can grow a big tree, are invisible to the eyes. But significant changes in human society are taking place within it.
——Tolstoy