I never buy anything unless I can give myself a good reason why I should buy it.
We must learn from nature how to use resources efficiently.
Start where you are, with what you have. Make something of it and never be satisfied.
In business, as in life, you have to take calculated risks.
引力波的发现证明了人类智慧和毅力的力量。
保持耐心,耐心等待机会。