10 ideas
| 15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
| 15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |
| 8124 | The highest feelings of mankind can only be transmitted by art [Tolstoy] |
| 8121 | Art is when one man uses external signs to hand on his feelings to another man [Tolstoy] |
| 8122 | True works of art transmit completely new feelings [Tolstoy] |
| 8123 | The purpose of art is to help mankind to evolve better, more socially beneficial feelings [Tolstoy] |
| 22710 | People estimate art according to their moral values [Tolstoy] |
| 8064 | We separate the concept of beauty from goodness, unlike the ancients [Tolstoy] |
| 8125 | The upper classes put beauty first, and thus freed themselves from morality [Tolstoy] |
| 12702 | Causes can be inferred from perfect knowledge of their effects [Leibniz] |