The central hypothesis of this book could be described as follows: “Drawing on natural (human) languages, we could benefit in terms of understanding and possibly management, by searching for languages everywhere in life sciences, and I suggest that these languages are interlinked in time by specific mechanisms.” To explore this hypothesis, the book structure is based on five chapters: the evolution of writing systems; the information concept in life sciences; the ubiquity of grammar and language; the chronology of languages and origins of life; and Philosophical justifications. This book is a personal mixture of well established results and speculative intuitions. The reader will often be asked to accept in an unconventional situation, adopting a linguistic and informational point of view, rather than a more traditional biological and mathematical point of view. The reader should not be afraid by it and will be rewarded to gain a bird’s-eye view of the coherence of the whole