ترجمه ی یکی از کتاب های اینشتین

سلام کسی معنی دقیق  این پارا گرافو میدونه؟(more or lessرو اصلا درک نمیکنم)

geometry sets out from certain conceptions such as "plane" and "point"and "straight line" with which we are able to associate more or less definite ideas and from certain simple propositions which,in virtue of these ideas we are inclined to accept as "true