hiː sˈɔː ðə pˈiːk ˈɔɪl fɪnˈɑːmɪnən æz ɐn ɪnvˈɛstmənt ɑːpɚtˈuːnᵻɾi ˈæftɚ ɹˈiːdɪŋ bᵻjˌɔnd ðə lˈɪmɪts, ɐ nˈaɪntiːnhˈʌndɹɪd nˈaɪnti tˈuː bˈʊk ðæt diːtˈeɪld ðə kˈɑːnsɪkwənsᵻz əvɚ ɹˈæpɪdli ɡɹˈoʊɪŋ wˈɜːld pˌɑːpjʊlˈeɪʃən.
He saw the peak oil phenomenon as an investment opportunity after reading Beyond the Limits, a 1992 book that detailed the consequences of a rapidly growing world population.