The habit of reading is the only enjoyment in which there is no alloy; it lasts when all other pleasures fade.
世界称之为不道德的书，是那些展示世界自身羞耻的书。
The secret of joy in work is contained in one word - excellence. To know how to do something well is to enjoy it.
Nothing is a waste of time if you use the experience wisely.
Every breakthrough in laser technology brings us closer to solving mysteries that have puzzled scientists for decades.