The individual is not accountable to society for his actions in so far as these concern the interests of no person but himself.

Choose the life that is most useful， and habit will make it the most agreeable.

I believe in positive thinking and visualization.

Environmental responsibility should be integrated into every decision we make.

The only limit to our realization of tomorrow is our doubts of today.

资本主义本质上是一种经济变革的形式或方法，不仅从未静止，而且永远不可能静止。