Translation of "Intellectual" in Chinese

In terms of intellectual hobbies, I really like learning Chinese characters.

对知识的爱好而言，我真的喜欢学汉字。

An intellectual is a person who has discovered something more interesting than sex.

一个知识分子是发现到一种比性行为更有意思的活动的人。

In my view, everyone should have intellectual hobbies as well as an interest in physical activities.

对我自己来说，每个人应该有学知识的爱好，也应该对体育活动感兴趣。

An intellectual is a man who says a simple thing in a difficult way; an artist is a man who says a difficult thing in a simple way.

知識分子就是用困難的方式說一件簡單的事情的人；藝術家就是用簡單的方法說一件困難的事情的人。