As others have mentioned, that's a very difficult question to answer. Philosophy is huge and incredibly subjective, often based on what each persons perspective

As others have mentioned, that's a very difficult question to answer. Philosophy is huge and incredibly subjective, often based on what each persons perspective considers a certain context of reality to be worth philosophizing. Personally I enjoy Bertrand Russell and Terence McKenna very very much, I've invested a lot of time in both of them. .