4 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
18201 | General principles can be obvious in mathematics, but bold speculations in empirical science [Parsons,C] |
10269 | Mathematics eliminates possibility, as being simultaneous actuality in sets [Putnam] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |