This work aims to present a new perspective, more fundamental issues, namely: knowledge of pollution; assumptions conservation and generalized equivalence and some implications for astrobiology and cosmology; death and survival - between certainty and hypothesis; mysteries of time and thought freedom; conscience and time. Assumptions can be classified into two categories: conventional (when they are developed following the results of accepted theories) and unconventional (when they are drawn others are unconventional, if not developed as a result of accepted theories but created other reasons, often having a very high proportion imagination). Unconventional hypotheses have weaknesses and limitations, but have the ability to open new horizons for knowledge, new lines of research, which is not possible with conventional assumptions. This paper addresses some broad categories of readers with philosophical concerns that are willing to think freely without preconceptions.