Practical wisdom is only to be learned in the school of experience. (Samuel Smiles, British writer)
实用的知识只有通过亲身体验才能学到。(英国作家 斯迈尔斯 . S .)

Proverbs are short sentences drawn from long experience. (Miguel de Cervantes, Spanish writer)
谚语是从长期经验中获得的短句。(班牙作家 塞万提斯.M.)

The tragedy of the world is that those who are imaginative have but slight experience, and those who are experienced have feeble imaginations. (Alfred North Whitehead, British philosopher and nathematician)
世界的悲剧就在于有想象力又缺乏经验，而有经验的人又缺乏想象力。(英国哲学家、数学家 怀特海 .A . N.)

The great difficulty in education is to get experience out of ideas. (Grorge Santayana, Spain-born American philosopher and poet)
教育之艰苦在于从意念中获得经验。(西班牙裔美国哲学家、诗人 桑塔亚那.G.)

The greatest lesson in life is to know that even fools are right sometimes. (Winston Churchill. British statesman)
傻瓜有时候也是对的。(英国政治家 丘吉尔 .W.)

To make good use of life one should have in youth the experience of advanced years, and in old age the vigor of youth. (Stanislars I, Polish king)
青年而有老年之经验，老年而有青年之朝气，就能使人生发挥更大的作用。(波兰国王 斯坦尼劳斯一世)