Just because you can build a machine that is better than a person at something doesn't mean that it is going to have the ability to learn new domains or connect different types of information or context to do superhuman things. This is critically important to appreciate.

Man cannot possess anything as long as he fears death. But to him who does not fear it, everything belongs. If there was no suffering, man would not know his limits, would not know himself.

Science is incompetent to reason upon the creation of matter itself out of nothing. We have reached the utmost limit of our thinking faculties when we have admitted that because matter cannot be eternal and self-existent it must have been created.

We cannot even reproduce our thoughts entirely in words.

Everything has its limit - iron ore cannot be educated into gold.

He who is not a bird should not build his nest over abysses.