Buddha was speaking about reality. Reality may be one, in its deepest essence, but Buddha also stated that all propositions about reality are only contingent. Reality is devoid of any intrinsic identity that can be captured by any one single proposition - that is what Buddha meant by "voidness." Therefore, Buddhism strongly discourages blind faith and fanaticism.
Americans are interested because they are open-minded. They have an education system that teaches them to find out for themselves why things are the way they are. Open-minded people tend to be interested in Buddhism because Buddha urged people to investigate things - he didn't just command them to believe.
Our civilization, bequeathed to us by fierce adventurers, eaters of meat and hunters, is so full of hurry and combat, so busy about many things which perhaps are of no importance, that it cannot but see something feeble in a civilization which smiles as it refuses to make the battlefield the test of excellence.
Modern Hinduism, modern Jainism, and Buddhism branched off at the same time. For some period, each seemed to have wanted to outdo the others in grotesqueness and humbuggism.
Solitude is happiness for one who is content, who has heard the Dhamma and clearly sees. Non-affliction is happiness in the world - harmlessness towards all living beings.
Each religion has helped mankind. Paganism increased in man the light of beauty, the largeness and height of his life, his aim at a many-sided perfection; Christianity gave him some vision of divine love and charity; Buddhism has shown him a noble way to be wiser, gentler, purer, Judaism and Islam how to be religiously faithful in action and zealously devoted to God; Hinduism has opened to him the largest and profoundest spiritual possibilities.
The religion of the future will be a cosmic religion. The religion which based on experience, which refuses dogmatic. If there's any religion that would cope the scientific needs it will be Buddhism.