'self-contradictory statements': statements which cannot be determined to be true or false, i.e. are both true and false, thus cannot be said to exist.

common self-contradictory statements: 'i am lying.'

if the statement is true, then you must be telling the truth, in which case, you cannot be lying, thus there is a contradiction. if the statement is false, then you are lying, in which case, what you are saying is true, and therefore, another contradiction. as a result, the statement 'i am lying' is a self-contradictory statement that makes no sense, is illogical and thus, is value/meaningless. clarification: you are not lying about an external subject. the statement is in relevance only to itself.

self-contradictory problems: there is a village in which there is a barber who only shaves those who do not shave themselves. that is his criteria. should he shave himself? (that is, the barber is included in this community)

two options: he does or he does not shave himself. if he shaves himself, then that contradicts with his criteria, of only shaving those who do not shave themselves. he cannot shave himself because he would be shaving himself. if he does not shave himself, then he fulfils his criteria to be shaved by the barber (himself), but the moment he shaves himself, we go back to the first contradiction. therefore, the statement is self-contradictory and the barber should not exist.

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think i have tweeted this or something before, maybe. that motivation comes from everywhere and anywhere. even if the source of it is something bad, for example, the desire to beat someone you hate at something, rather than the relatively purer cause of wanting to do your best. is there a difference? i don't think so. sometimes i feel i can only draw motivation from the former source, which makes me wonder if i cannot draw it from the latter because i am overly content with doing an average job or because i am afraid i will not do well